Which of the following characteristics are shared by all three types of muscle tissues?
a. each one contains myosin and actin.
b. each one is neurogenic.
c. each one is striated.
d. each one is considered to be under voluntary control.
e. none of these answers.
A
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In females, what is the action of the bulbospongiosus?
A) stabilizes central tendon of perineum B) closes urethra; elevates and retracts anus C) compresses bulbourethral glands D) compresses and stiffens clitoris; narrows vaginal opening E) flexes coccygeal joints; tenses and supports pelvic floor
Which of the following labeled panels in the figure shows hyperextension?
a) C b) E c) F d) G e) I
The semispinalis capitis:
A) is part of the erector spinae group of muscles. B) when acting unilaterally, rotates the head so that the face points to the ipsilateral side. C) when acting bilaterally, flexes the neck. D) is innervated by cervical and upper thoracic posterior rami. E) is superficial to the splenius capitis.
Arteries carry blood away from the ventricles whereas veins carry blood toward the atria
Indicate whether the statement is true or false